drivers/net/wireless/p54/p54common.c

   1 /*
   2  * Common code for mac80211 Prism54 drivers
   3  *
   4  * Copyright (c) 2006, Michael Wu <flamingice@sourmilk.net>
   5  * Copyright (c) 2007, Christian Lamparter <chunkeey@web.de>
   6  * Copyright 2008, Johannes Berg <johannes@sipsolutions.net>
   7  *
   8  * Based on:
   9  * - the islsm (softmac prism54) driver, which is:
  10  *   Copyright 2004-2006 Jean-Baptiste Note <jbnote@gmail.com>, et al.
  11  * - stlc45xx driver
  12  *   Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License version 2 as
  16  * published by the Free Software Foundation.
  17  */
  18
  19 #include <linux/init.h>
  20 #include <linux/firmware.h>
  21 #include <linux/etherdevice.h>
  22
  23 #include <net/mac80211.h>
  24
  25 #include "p54.h"
  26 #include "p54common.h"
  27
  28 static int modparam_nohwcrypt;
  29 module_param_named(nohwcrypt, modparam_nohwcrypt, bool, S_IRUGO);
  30 MODULE_PARM_DESC(nohwcrypt, "Disable hardware encryption.");
  31 MODULE_AUTHOR("Michael Wu <flamingice@sourmilk.net>");
  32 MODULE_DESCRIPTION("Softmac Prism54 common code");
  33 MODULE_LICENSE("GPL");
  34 MODULE_ALIAS("prism54common");
  35
  36 static struct ieee80211_rate p54_bgrates[] = {
  37         { .bitrate = 10, .hw_value = 0, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  38         { .bitrate = 20, .hw_value = 1, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  39         { .bitrate = 55, .hw_value = 2, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  40         { .bitrate = 110, .hw_value = 3, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
  41         { .bitrate = 60, .hw_value = 4, },
  42         { .bitrate = 90, .hw_value = 5, },
  43         { .bitrate = 120, .hw_value = 6, },
  44         { .bitrate = 180, .hw_value = 7, },
  45         { .bitrate = 240, .hw_value = 8, },
  46         { .bitrate = 360, .hw_value = 9, },
  47         { .bitrate = 480, .hw_value = 10, },
  48         { .bitrate = 540, .hw_value = 11, },
  49 };
  50
  51 static struct ieee80211_channel p54_bgchannels[] = {
  52         { .center_freq = 2412, .hw_value = 1, },
  53         { .center_freq = 2417, .hw_value = 2, },
  54         { .center_freq = 2422, .hw_value = 3, },
  55         { .center_freq = 2427, .hw_value = 4, },
  56         { .center_freq = 2432, .hw_value = 5, },
  57         { .center_freq = 2437, .hw_value = 6, },
  58         { .center_freq = 2442, .hw_value = 7, },
  59         { .center_freq = 2447, .hw_value = 8, },
  60         { .center_freq = 2452, .hw_value = 9, },
  61         { .center_freq = 2457, .hw_value = 10, },
  62         { .center_freq = 2462, .hw_value = 11, },
  63         { .center_freq = 2467, .hw_value = 12, },
  64         { .center_freq = 2472, .hw_value = 13, },
  65         { .center_freq = 2484, .hw_value = 14, },
  66 };
  67
  68 static struct ieee80211_supported_band band_2GHz = {
  69         .channels = p54_bgchannels,
  70         .n_channels = ARRAY_SIZE(p54_bgchannels),
  71         .bitrates = p54_bgrates,
  72         .n_bitrates = ARRAY_SIZE(p54_bgrates),
  73 };
  74
  75 static struct ieee80211_rate p54_arates[] = {
  76         { .bitrate = 60, .hw_value = 4, },
  77         { .bitrate = 90, .hw_value = 5, },
  78         { .bitrate = 120, .hw_value = 6, },
  79         { .bitrate = 180, .hw_value = 7, },
  80         { .bitrate = 240, .hw_value = 8, },
  81         { .bitrate = 360, .hw_value = 9, },
  82         { .bitrate = 480, .hw_value = 10, },
  83         { .bitrate = 540, .hw_value = 11, },
  84 };
  85
  86 static struct ieee80211_channel p54_achannels[] = {
  87         { .center_freq = 4920 },
  88         { .center_freq = 4940 },
  89         { .center_freq = 4960 },
  90         { .center_freq = 4980 },
  91         { .center_freq = 5040 },
  92         { .center_freq = 5060 },
  93         { .center_freq = 5080 },
  94         { .center_freq = 5170 },
  95         { .center_freq = 5180 },
  96         { .center_freq = 5190 },
  97         { .center_freq = 5200 },
  98         { .center_freq = 5210 },
  99         { .center_freq = 5220 },
 100         { .center_freq = 5230 },
 101         { .center_freq = 5240 },
 102         { .center_freq = 5260 },
 103         { .center_freq = 5280 },
 104         { .center_freq = 5300 },
 105         { .center_freq = 5320 },
 106         { .center_freq = 5500 },
 107         { .center_freq = 5520 },
 108         { .center_freq = 5540 },
 109         { .center_freq = 5560 },
 110         { .center_freq = 5580 },
 111         { .center_freq = 5600 },
 112         { .center_freq = 5620 },
 113         { .center_freq = 5640 },
 114         { .center_freq = 5660 },
 115         { .center_freq = 5680 },
 116         { .center_freq = 5700 },
 117         { .center_freq = 5745 },
 118         { .center_freq = 5765 },
 119         { .center_freq = 5785 },
 120         { .center_freq = 5805 },
 121         { .center_freq = 5825 },
 122 };
 123
 124 static struct ieee80211_supported_band band_5GHz = {
 125         .channels = p54_achannels,
 126         .n_channels = ARRAY_SIZE(p54_achannels),
 127         .bitrates = p54_arates,
 128         .n_bitrates = ARRAY_SIZE(p54_arates),
 129 };
 130
 131 int p54_parse_firmware(struct ieee80211_hw *dev, const struct firmware *fw)
 132 {
 133         struct p54_common *priv = dev->priv;
 134         struct bootrec_exp_if *exp_if;
 135         struct bootrec *bootrec;
 136         u32 *data = (u32 *)fw->data;
 137         u32 *end_data = (u32 *)fw->data + (fw->size >> 2);
 138         u8 *fw_version = NULL;
 139         size_t len;
 140         int i;
 141         int maxlen;
 142
 143         if (priv->rx_start)
 144                 return 0;
 145
 146         while (data < end_data && *data)
 147                 data++;
 148
 149         while (data < end_data && !*data)
 150                 data++;
 151
 152         bootrec = (struct bootrec *) data;
 153
 154         while (bootrec->data <= end_data &&
 155                (bootrec->data + (len = le32_to_cpu(bootrec->len))) <= end_data) {
 156                 u32 code = le32_to_cpu(bootrec->code);
 157                 switch (code) {
 158                 case BR_CODE_COMPONENT_ID:
 159                         priv->fw_interface = be32_to_cpup((__be32 *)
 160                                              bootrec->data);
 161                         switch (priv->fw_interface) {
 162                         case FW_LM86:
 163                         case FW_LM20:
 164                         case FW_LM87: {
 165                                 char *iftype = (char *)bootrec->data;
 166                                 printk(KERN_INFO "%s: p54 detected a LM%c%c "
 167                                                  "firmware\n",
 168                                         wiphy_name(dev->wiphy),
 169                                         iftype[2], iftype[3]);
 170                                 break;
 171                                 }
 172                         case FW_FMAC:
 173                         default:
 174                                 printk(KERN_ERR "%s: unsupported firmware\n",
 175                                         wiphy_name(dev->wiphy));
 176                                 return -ENODEV;
 177                         }
 178                         break;
 179                 case BR_CODE_COMPONENT_VERSION:
 180                         /* 24 bytes should be enough for all firmwares */
 181                         if (strnlen((unsigned char*)bootrec->data, 24) < 24)
 182                                 fw_version = (unsigned char*)bootrec->data;
 183                         break;
 184                 case BR_CODE_DESCR: {
 185                         struct bootrec_desc *desc =
 186                                 (struct bootrec_desc *)bootrec->data;
 187                         priv->rx_start = le32_to_cpu(desc->rx_start);
 188                         /* FIXME add sanity checking */
 189                         priv->rx_end = le32_to_cpu(desc->rx_end) - 0x3500;
 190                         priv->headroom = desc->headroom;
 191                         priv->tailroom = desc->tailroom;
 192                         priv->privacy_caps = desc->privacy_caps;
 193                         priv->rx_keycache_size = desc->rx_keycache_size;
 194                         if (le32_to_cpu(bootrec->len) == 11)
 195                                 priv->rx_mtu = le16_to_cpu(desc->rx_mtu);
 196                         else
 197                                 priv->rx_mtu = (size_t)
 198                                         0x620 - priv->tx_hdr_len;
 199                         maxlen = priv->tx_hdr_len + /* USB devices */
 200                                  sizeof(struct p54_rx_data) +
 201                                  4 + /* rx alignment */
 202                                  IEEE80211_MAX_FRAG_THRESHOLD;
 203                         if (priv->rx_mtu > maxlen && PAGE_SIZE == 4096) {
 204                                 printk(KERN_INFO "p54: rx_mtu reduced from %d "
 205                                                  "to %d\n", priv->rx_mtu,
 206                                                  maxlen);
 207                                 priv->rx_mtu = maxlen;
 208                         }
 209                         break;
 210                         }
 211                 case BR_CODE_EXPOSED_IF:
 212                         exp_if = (struct bootrec_exp_if *) bootrec->data;
 213                         for (i = 0; i < (len * sizeof(*exp_if) / 4); i++)
 214                                 if (exp_if[i].if_id == cpu_to_le16(0x1a))
 215                                         priv->fw_var = le16_to_cpu(exp_if[i].variant);
 216                         break;
 217                 case BR_CODE_DEPENDENT_IF:
 218                         break;
 219                 case BR_CODE_END_OF_BRA:
 220                 case LEGACY_BR_CODE_END_OF_BRA:
 221                         end_data = NULL;
 222                         break;
 223                 default:
 224                         break;
 225                 }
 226                 bootrec = (struct bootrec *)&bootrec->data[len];
 227         }
 228
 229         if (fw_version)
 230                 printk(KERN_INFO "%s: FW rev %s - Softmac protocol %x.%x\n",
 231                         wiphy_name(dev->wiphy), fw_version,
 232                         priv->fw_var >> 8, priv->fw_var & 0xff);
 233
 234         if (priv->fw_var < 0x500)
 235                 printk(KERN_INFO "%s: you are using an obsolete firmware. "
 236                        "visit http://wireless.kernel.org/en/users/Drivers/p54 "
 237                        "and grab one for \"kernel >= 2.6.28\"!\n",
 238                         wiphy_name(dev->wiphy));
 239
 240         if (priv->fw_var >= 0x300) {
 241                 /* Firmware supports QoS, use it! */
 242                 priv->tx_stats[P54_QUEUE_AC_VO].limit = 3;
 243                 priv->tx_stats[P54_QUEUE_AC_VI].limit = 4;
 244                 priv->tx_stats[P54_QUEUE_AC_BE].limit = 3;
 245                 priv->tx_stats[P54_QUEUE_AC_BK].limit = 2;
 246                 dev->queues = P54_QUEUE_AC_NUM;
 247         }
 248
 249         if (!modparam_nohwcrypt)
 250                 printk(KERN_INFO "%s: cryptographic accelerator "
 251                                  "WEP:%s, TKIP:%s, CCMP:%s\n",
 252                         wiphy_name(dev->wiphy),
 253                         (priv->privacy_caps & BR_DESC_PRIV_CAP_WEP) ? "YES" :
 254                         "no", (priv->privacy_caps & (BR_DESC_PRIV_CAP_TKIP |
 255                          BR_DESC_PRIV_CAP_MICHAEL)) ? "YES" : "no",
 256                         (priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP) ?
 257                         "YES" : "no");
 258
 259         return 0;
 260 }
 261 EXPORT_SYMBOL_GPL(p54_parse_firmware);
 262
 263 static int p54_convert_rev0(struct ieee80211_hw *dev,
 264                             struct pda_pa_curve_data *curve_data)
 265 {
 266         struct p54_common *priv = dev->priv;
 267         struct p54_pa_curve_data_sample *dst;
 268         struct pda_pa_curve_data_sample_rev0 *src;
 269         size_t cd_len = sizeof(*curve_data) +
 270                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 271                  curve_data->channels;
 272         unsigned int i, j;
 273         void *source, *target;
 274
 275         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 276         if (!priv->curve_data)
 277                 return -ENOMEM;
 278
 279         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 280         source = curve_data->data;
 281         target = priv->curve_data->data;
 282         for (i = 0; i < curve_data->channels; i++) {
 283                 __le16 *freq = source;
 284                 source += sizeof(__le16);
 285                 *((__le16 *)target) = *freq;
 286                 target += sizeof(__le16);
 287                 for (j = 0; j < curve_data->points_per_channel; j++) {
 288                         dst = target;
 289                         src = source;
 290
 291                         dst->rf_power = src->rf_power;
 292                         dst->pa_detector = src->pa_detector;
 293                         dst->data_64qam = src->pcv;
 294                         /* "invent" the points for the other modulations */
 295 #define SUB(x,y) (u8)((x) - (y)) > (x) ? 0 : (x) - (y)
 296                         dst->data_16qam = SUB(src->pcv, 12);
 297                         dst->data_qpsk = SUB(dst->data_16qam, 12);
 298                         dst->data_bpsk = SUB(dst->data_qpsk, 12);
 299                         dst->data_barker = SUB(dst->data_bpsk, 14);
 300 #undef SUB
 301                         target += sizeof(*dst);
 302                         source += sizeof(*src);
 303                 }
 304         }
 305
 306         return 0;
 307 }
 308
 309 static int p54_convert_rev1(struct ieee80211_hw *dev,
 310                             struct pda_pa_curve_data *curve_data)
 311 {
 312         struct p54_common *priv = dev->priv;
 313         struct p54_pa_curve_data_sample *dst;
 314         struct pda_pa_curve_data_sample_rev1 *src;
 315         size_t cd_len = sizeof(*curve_data) +
 316                 (curve_data->points_per_channel*sizeof(*dst) + 2) *
 317                  curve_data->channels;
 318         unsigned int i, j;
 319         void *source, *target;
 320
 321         priv->curve_data = kmalloc(cd_len, GFP_KERNEL);
 322         if (!priv->curve_data)
 323                 return -ENOMEM;
 324
 325         memcpy(priv->curve_data, curve_data, sizeof(*curve_data));
 326         source = curve_data->data;
 327         target = priv->curve_data->data;
 328         for (i = 0; i < curve_data->channels; i++) {
 329                 __le16 *freq = source;
 330                 source += sizeof(__le16);
 331                 *((__le16 *)target) = *freq;
 332                 target += sizeof(__le16);
 333                 for (j = 0; j < curve_data->points_per_channel; j++) {
 334                         memcpy(target, source, sizeof(*src));
 335
 336                         target += sizeof(*dst);
 337                         source += sizeof(*src);
 338                 }
 339                 source++;
 340         }
 341
 342         return 0;
 343 }
 344
 345 static const char *p54_rf_chips[] = { "NULL", "Duette3", "Duette2",
 346                               "Frisbee", "Xbow", "Longbow", "NULL", "NULL" };
 347 static int p54_init_xbow_synth(struct ieee80211_hw *dev);
 348
 349 static void p54_parse_rssical(struct ieee80211_hw *dev, void *data, int len,
 350                              u16 type)
 351 {
 352         struct p54_common *priv = dev->priv;
 353         int offset = (type == PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED) ? 2 : 0;
 354         int entry_size = sizeof(struct pda_rssi_cal_entry) + offset;
 355         int num_entries = (type == PDR_RSSI_LINEAR_APPROXIMATION) ? 1 : 2;
 356         int i;
 357
 358         if (len != (entry_size * num_entries)) {
 359                 printk(KERN_ERR "%s: unknown rssi calibration data packing "
 360                                  " type:(%x) len:%d.\n",
 361                        wiphy_name(dev->wiphy), type, len);
 362
 363                 print_hex_dump_bytes("rssical:", DUMP_PREFIX_NONE,
 364                                      data, len);
 365
 366                 printk(KERN_ERR "%s: please report this issue.\n",
 367                         wiphy_name(dev->wiphy));
 368                 return;
 369         }
 370
 371         for (i = 0; i < num_entries; i++) {
 372                 struct pda_rssi_cal_entry *cal = data +
 373                                                  (offset + i * entry_size);
 374                 priv->rssical_db[i].mul = (s16) le16_to_cpu(cal->mul);
 375                 priv->rssical_db[i].add = (s16) le16_to_cpu(cal->add);
 376         }
 377 }
 378
 379 static void p54_parse_default_country(struct ieee80211_hw *dev,
 380                                       void *data, int len)
 381 {
 382         struct pda_country *country;
 383
 384         if (len != sizeof(*country)) {
 385                 printk(KERN_ERR "%s: found possible invalid default country "
 386                                 "eeprom entry. (entry size: %d)\n",
 387                        wiphy_name(dev->wiphy), len);
 388
 389                 print_hex_dump_bytes("country:", DUMP_PREFIX_NONE,
 390                                      data, len);
 391
 392                 printk(KERN_ERR "%s: please report this issue.\n",
 393                         wiphy_name(dev->wiphy));
 394                 return;
 395         }
 396
 397         country = (struct pda_country *) data;
 398         if (country->flags == PDR_COUNTRY_CERT_CODE_PSEUDO)
 399                 regulatory_hint(dev->wiphy, country->alpha2);
 400         else {
 401                 /* TODO:
 402                  * write a shared/common function that converts
 403                  * "Regulatory domain codes" (802.11-2007 14.8.2.2)
 404                  * into ISO/IEC 3166-1 alpha2 for regulatory_hint.
 405                  */
 406         }
 407 }
 408
 409 static int p54_parse_eeprom(struct ieee80211_hw *dev, void *eeprom, int len)
 410 {
 411         struct p54_common *priv = dev->priv;
 412         struct eeprom_pda_wrap *wrap = NULL;
 413         struct pda_entry *entry;
 414         unsigned int data_len, entry_len;
 415         void *tmp;
 416         int err;
 417         u8 *end = (u8 *)eeprom + len;
 418         u16 synth = 0;
 419
 420         wrap = (struct eeprom_pda_wrap *) eeprom;
 421         entry = (void *)wrap->data + le16_to_cpu(wrap->len);
 422
 423         /* verify that at least the entry length/code fits */
 424         while ((u8 *)entry <= end - sizeof(*entry)) {
 425                 entry_len = le16_to_cpu(entry->len);
 426                 data_len = ((entry_len - 1) << 1);
 427
 428                 /* abort if entry exceeds whole structure */
 429                 if ((u8 *)entry + sizeof(*entry) + data_len > end)
 430                         break;
 431
 432                 switch (le16_to_cpu(entry->code)) {
 433                 case PDR_MAC_ADDRESS:
 434                         SET_IEEE80211_PERM_ADDR(dev, entry->data);
 435                         break;
 436                 case PDR_PRISM_PA_CAL_OUTPUT_POWER_LIMITS:
 437                         if (data_len < 2) {
 438                                 err = -EINVAL;
 439                                 goto err;
 440                         }
 441
 442                         if (2 + entry->data[1]*sizeof(*priv->output_limit) > data_len) {
 443                                 err = -EINVAL;
 444                                 goto err;
 445                         }
 446
 447                         priv->output_limit = kmalloc(entry->data[1] *
 448                                 sizeof(*priv->output_limit), GFP_KERNEL);
 449
 450                         if (!priv->output_limit) {
 451                                 err = -ENOMEM;
 452                                 goto err;
 453                         }
 454
 455                         memcpy(priv->output_limit, &entry->data[2],
 456                                entry->data[1]*sizeof(*priv->output_limit));
 457                         priv->output_limit_len = entry->data[1];
 458                         break;
 459                 case PDR_PRISM_PA_CAL_CURVE_DATA: {
 460                         struct pda_pa_curve_data *curve_data =
 461                                 (struct pda_pa_curve_data *)entry->data;
 462                         if (data_len < sizeof(*curve_data)) {
 463                                 err = -EINVAL;
 464                                 goto err;
 465                         }
 466
 467                         switch (curve_data->cal_method_rev) {
 468                         case 0:
 469                                 err = p54_convert_rev0(dev, curve_data);
 470                                 break;
 471                         case 1:
 472                                 err = p54_convert_rev1(dev, curve_data);
 473                                 break;
 474                         default:
 475                                 printk(KERN_ERR "%s: unknown curve data "
 476                                                 "revision %d\n",
 477                                                 wiphy_name(dev->wiphy),
 478                                                 curve_data->cal_method_rev);
 479                                 err = -ENODEV;
 480                                 break;
 481                         }
 482                         if (err)
 483                                 goto err;
 484                         }
 485                         break;
 486                 case PDR_PRISM_ZIF_TX_IQ_CALIBRATION:
 487                         priv->iq_autocal = kmalloc(data_len, GFP_KERNEL);
 488                         if (!priv->iq_autocal) {
 489                                 err = -ENOMEM;
 490                                 goto err;
 491                         }
 492
 493                         memcpy(priv->iq_autocal, entry->data, data_len);
 494                         priv->iq_autocal_len = data_len / sizeof(struct pda_iq_autocal_entry);
 495                         break;
 496                 case PDR_DEFAULT_COUNTRY:
 497                         p54_parse_default_country(dev, entry->data, data_len);
 498                         break;
 499                 case PDR_INTERFACE_LIST:
 500                         tmp = entry->data;
 501                         while ((u8 *)tmp < entry->data + data_len) {
 502                                 struct bootrec_exp_if *exp_if = tmp;
 503                                 if (le16_to_cpu(exp_if->if_id) == 0xf)
 504                                         synth = le16_to_cpu(exp_if->variant);
 505                                 tmp += sizeof(struct bootrec_exp_if);
 506                         }
 507                         break;
 508                 case PDR_HARDWARE_PLATFORM_COMPONENT_ID:
 509                         priv->version = *(u8 *)(entry->data + 1);
 510                         break;
 511                 case PDR_RSSI_LINEAR_APPROXIMATION:
 512                 case PDR_RSSI_LINEAR_APPROXIMATION_DUAL_BAND:
 513                 case PDR_RSSI_LINEAR_APPROXIMATION_EXTENDED:
 514                         p54_parse_rssical(dev, entry->data, data_len,
 515                                           le16_to_cpu(entry->code));
 516                         break;
 517                 case PDR_END:
 518                         /* make it overrun */
 519                         entry_len = len;
 520                         break;
 521                 case PDR_MANUFACTURING_PART_NUMBER:
 522                 case PDR_PDA_VERSION:
 523                 case PDR_NIC_SERIAL_NUMBER:
 524                 case PDR_REGULATORY_DOMAIN_LIST:
 525                 case PDR_TEMPERATURE_TYPE:
 526                 case PDR_PRISM_PCI_IDENTIFIER:
 527                 case PDR_COUNTRY_INFORMATION:
 528                 case PDR_OEM_NAME:
 529                 case PDR_PRODUCT_NAME:
 530                 case PDR_UTF8_OEM_NAME:
 531                 case PDR_UTF8_PRODUCT_NAME:
 532                 case PDR_COUNTRY_LIST:
 533                 case PDR_ANTENNA_GAIN:
 534                 case PDR_PRISM_INDIGO_PA_CALIBRATION_DATA:
 535                 case PDR_REGULATORY_POWER_LIMITS:
 536                 case PDR_RADIATED_TRANSMISSION_CORRECTION:
 537                 case PDR_PRISM_TX_IQ_CALIBRATION:
 538                 case PDR_BASEBAND_REGISTERS:
 539                 case PDR_PER_CHANNEL_BASEBAND_REGISTERS:
 540                         break;
 541                 default:
 542                         printk(KERN_INFO "%s: unknown eeprom code : 0x%x\n",
 543                                 wiphy_name(dev->wiphy),
 544                                 le16_to_cpu(entry->code));
 545                         break;
 546                 }
 547
 548                 entry = (void *)entry + (entry_len + 1)*2;
 549         }
 550
 551         if (!synth || !priv->iq_autocal || !priv->output_limit ||
 552             !priv->curve_data) {
 553                 printk(KERN_ERR "%s: not all required entries found in eeprom!\n",
 554                         wiphy_name(dev->wiphy));
 555                 err = -EINVAL;
 556                 goto err;
 557         }
 558
 559         priv->rxhw = synth & PDR_SYNTH_FRONTEND_MASK;
 560         if (priv->rxhw == 4)
 561                 p54_init_xbow_synth(dev);
 562         if (!(synth & PDR_SYNTH_24_GHZ_DISABLED))
 563                 dev->wiphy->bands[IEEE80211_BAND_2GHZ] = &band_2GHz;
 564         if (!(synth & PDR_SYNTH_5_GHZ_DISABLED))
 565                 dev->wiphy->bands[IEEE80211_BAND_5GHZ] = &band_5GHz;
 566
 567         if (!is_valid_ether_addr(dev->wiphy->perm_addr)) {
 568                 u8 perm_addr[ETH_ALEN];
 569
 570                 printk(KERN_WARNING "%s: Invalid hwaddr! Using randomly generated MAC addr\n",
 571                         wiphy_name(dev->wiphy));
 572                 random_ether_addr(perm_addr);
 573                 SET_IEEE80211_PERM_ADDR(dev, perm_addr);
 574         }
 575
 576         printk(KERN_INFO "%s: hwaddr %pM, MAC:isl38%02x RF:%s\n",
 577                 wiphy_name(dev->wiphy),
 578                 dev->wiphy->perm_addr,
 579                 priv->version, p54_rf_chips[priv->rxhw]);
 580
 581         return 0;
 582
 583   err:
 584         if (priv->iq_autocal) {
 585                 kfree(priv->iq_autocal);
 586                 priv->iq_autocal = NULL;
 587         }
 588
 589         if (priv->output_limit) {
 590                 kfree(priv->output_limit);
 591                 priv->output_limit = NULL;
 592         }
 593
 594         if (priv->curve_data) {
 595                 kfree(priv->curve_data);
 596                 priv->curve_data = NULL;
 597         }
 598
 599         printk(KERN_ERR "%s: eeprom parse failed!\n",
 600                 wiphy_name(dev->wiphy));
 601         return err;
 602 }
 603
 604 static int p54_rssi_to_dbm(struct ieee80211_hw *dev, int rssi)
 605 {
 606         struct p54_common *priv = dev->priv;
 607         int band = dev->conf.channel->band;
 608
 609         return ((rssi * priv->rssical_db[band].mul) / 64 +
 610                          priv->rssical_db[band].add) / 4;
 611 }
 612
 613 static int p54_rx_data(struct ieee80211_hw *dev, struct sk_buff *skb)
 614 {
 615         struct p54_common *priv = dev->priv;
 616         struct p54_rx_data *hdr = (struct p54_rx_data *) skb->data;
 617         struct ieee80211_rx_status rx_status = {0};
 618         u16 freq = le16_to_cpu(hdr->freq);
 619         size_t header_len = sizeof(*hdr);
 620         u32 tsf32;
 621         u8 rate = hdr->rate & 0xf;
 622
 623         /*
 624          * If the device is in a unspecified state we have to
 625          * ignore all data frames. Else we could end up with a
 626          * nasty crash.
 627          */
 628         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 629                 return 0;
 630
 631         if (!(hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_IN_FCS_GOOD))) {
 632                 if (priv->filter_flags & FIF_FCSFAIL)
 633                         rx_status.flag |= RX_FLAG_FAILED_FCS_CRC;
 634                 else
 635                         return 0;
 636         }
 637
 638         if (hdr->decrypt_status == P54_DECRYPT_OK)
 639                 rx_status.flag |= RX_FLAG_DECRYPTED;
 640         if ((hdr->decrypt_status == P54_DECRYPT_FAIL_MICHAEL) ||
 641             (hdr->decrypt_status == P54_DECRYPT_FAIL_TKIP))
 642                 rx_status.flag |= RX_FLAG_MMIC_ERROR;
 643
 644         rx_status.signal = p54_rssi_to_dbm(dev, hdr->rssi);
 645         rx_status.noise = priv->noise;
 646         /* XX correct? */
 647         rx_status.qual = (100 * hdr->rssi) / 127;
 648         if (hdr->rate & 0x10)
 649                 rx_status.flag |= RX_FLAG_SHORTPRE;
 650         if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
 651                 rx_status.rate_idx = (rate < 4) ? 0 : rate - 4;
 652         else
 653                 rx_status.rate_idx = rate;
 654
 655         rx_status.freq = freq;
 656         rx_status.band =  dev->conf.channel->band;
 657         rx_status.antenna = hdr->antenna;
 658
 659         tsf32 = le32_to_cpu(hdr->tsf32);
 660         if (tsf32 < priv->tsf_low32)
 661                 priv->tsf_high32++;
 662         rx_status.mactime = ((u64)priv->tsf_high32) << 32 | tsf32;
 663         priv->tsf_low32 = tsf32;
 664
 665         rx_status.flag |= RX_FLAG_TSFT;
 666
 667         if (hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 668                 header_len += hdr->align[0];
 669
 670         skb_pull(skb, header_len);
 671         skb_trim(skb, le16_to_cpu(hdr->len));
 672
 673         ieee80211_rx_irqsafe(dev, skb, &rx_status);
 674
 675         queue_delayed_work(dev->workqueue, &priv->work,
 676                            msecs_to_jiffies(P54_STATISTICS_UPDATE));
 677
 678         return -1;
 679 }
 680
 681 static void inline p54_wake_free_queues(struct ieee80211_hw *dev)
 682 {
 683         struct p54_common *priv = dev->priv;
 684         int i;
 685
 686         if (priv->mode == NL80211_IFTYPE_UNSPECIFIED)
 687                 return ;
 688
 689         for (i = 0; i < dev->queues; i++)
 690                 if (priv->tx_stats[i + P54_QUEUE_DATA].len <
 691                     priv->tx_stats[i + P54_QUEUE_DATA].limit)
 692                         ieee80211_wake_queue(dev, i);
 693 }
 694
 695 void p54_free_skb(struct ieee80211_hw *dev, struct sk_buff *skb)
 696 {
 697         struct p54_common *priv = dev->priv;
 698         struct ieee80211_tx_info *info;
 699         struct memrecord *range;
 700         unsigned long flags;
 701         u32 freed = 0, last_addr = priv->rx_start;
 702
 703         if (unlikely(!skb || !dev || !skb_queue_len(&priv->tx_queue)))
 704                 return;
 705
 706         /*
 707          * don't try to free an already unlinked skb
 708          */
 709         if (unlikely((!skb->next) || (!skb->prev)))
 710                 return;
 711
 712         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 713         info = IEEE80211_SKB_CB(skb);
 714         range = (void *)info->rate_driver_data;
 715         if (skb->prev != (struct sk_buff *)&priv->tx_queue) {
 716                 struct ieee80211_tx_info *ni;
 717                 struct memrecord *mr;
 718
 719                 ni = IEEE80211_SKB_CB(skb->prev);
 720                 mr = (struct memrecord *)ni->rate_driver_data;
 721                 last_addr = mr->end_addr;
 722         }
 723         if (skb->next != (struct sk_buff *)&priv->tx_queue) {
 724                 struct ieee80211_tx_info *ni;
 725                 struct memrecord *mr;
 726
 727                 ni = IEEE80211_SKB_CB(skb->next);
 728                 mr = (struct memrecord *)ni->rate_driver_data;
 729                 freed = mr->start_addr - last_addr;
 730         } else
 731                 freed = priv->rx_end - last_addr;
 732         __skb_unlink(skb, &priv->tx_queue);
 733         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 734         dev_kfree_skb_any(skb);
 735
 736         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 737                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 738                 p54_wake_free_queues(dev);
 739 }
 740 EXPORT_SYMBOL_GPL(p54_free_skb);
 741
 742 static struct sk_buff *p54_find_tx_entry(struct ieee80211_hw *dev,
 743                                            __le32 req_id)
 744 {
 745         struct p54_common *priv = dev->priv;
 746         struct sk_buff *entry = priv->tx_queue.next;
 747         unsigned long flags;
 748
 749         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 750         while (entry != (struct sk_buff *)&priv->tx_queue) {
 751                 struct p54_hdr *hdr = (struct p54_hdr *) entry->data;
 752
 753                 if (hdr->req_id == req_id) {
 754                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 755                         return entry;
 756                 }
 757                 entry = entry->next;
 758         }
 759         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 760         return NULL;
 761 }
 762
 763 static void p54_rx_frame_sent(struct ieee80211_hw *dev, struct sk_buff *skb)
 764 {
 765         struct p54_common *priv = dev->priv;
 766         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 767         struct p54_frame_sent *payload = (struct p54_frame_sent *) hdr->data;
 768         struct sk_buff *entry = (struct sk_buff *) priv->tx_queue.next;
 769         u32 addr = le32_to_cpu(hdr->req_id) - priv->headroom;
 770         struct memrecord *range = NULL;
 771         u32 freed = 0;
 772         u32 last_addr = priv->rx_start;
 773         unsigned long flags;
 774         int count, idx;
 775
 776         spin_lock_irqsave(&priv->tx_queue.lock, flags);
 777         while (entry != (struct sk_buff *)&priv->tx_queue) {
 778                 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(entry);
 779                 struct p54_hdr *entry_hdr;
 780                 struct p54_tx_data *entry_data;
 781                 unsigned int pad = 0, frame_len;
 782
 783                 range = (void *)info->rate_driver_data;
 784                 if (range->start_addr != addr) {
 785                         last_addr = range->end_addr;
 786                         entry = entry->next;
 787                         continue;
 788                 }
 789
 790                 if (entry->next != (struct sk_buff *)&priv->tx_queue) {
 791                         struct ieee80211_tx_info *ni;
 792                         struct memrecord *mr;
 793
 794                         ni = IEEE80211_SKB_CB(entry->next);
 795                         mr = (struct memrecord *)ni->rate_driver_data;
 796                         freed = mr->start_addr - last_addr;
 797                 } else
 798                         freed = priv->rx_end - last_addr;
 799
 800                 last_addr = range->end_addr;
 801                 __skb_unlink(entry, &priv->tx_queue);
 802                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 803
 804                 frame_len = entry->len;
 805                 entry_hdr = (struct p54_hdr *) entry->data;
 806                 entry_data = (struct p54_tx_data *) entry_hdr->data;
 807                 priv->tx_stats[entry_data->hw_queue].len--;
 808                 priv->stats.dot11ACKFailureCount += payload->tries - 1;
 809
 810                 /*
 811                  * Frames in P54_QUEUE_FWSCAN and P54_QUEUE_BEACON are
 812                  * generated by the driver. Therefore tx_status is bogus
 813                  * and we don't want to confuse the mac80211 stack.
 814                  */
 815                 if (unlikely(entry_data->hw_queue < P54_QUEUE_FWSCAN)) {
 816                         if (entry_data->hw_queue == P54_QUEUE_BEACON)
 817                                 priv->cached_beacon = NULL;
 818
 819                         kfree_skb(entry);
 820                         goto out;
 821                 }
 822
 823                 /*
 824                  * Clear manually, ieee80211_tx_info_clear_status would
 825                  * clear the counts too and we need them.
 826                  */
 827                 memset(&info->status.ampdu_ack_len, 0,
 828                        sizeof(struct ieee80211_tx_info) -
 829                        offsetof(struct ieee80211_tx_info, status.ampdu_ack_len));
 830                 BUILD_BUG_ON(offsetof(struct ieee80211_tx_info,
 831                                       status.ampdu_ack_len) != 23);
 832
 833                 if (entry_hdr->flags & cpu_to_le16(P54_HDR_FLAG_DATA_ALIGN))
 834                         pad = entry_data->align[0];
 835
 836                 /* walk through the rates array and adjust the counts */
 837                 count = payload->tries;
 838                 for (idx = 0; idx < 4; idx++) {
 839                         if (count >= info->status.rates[idx].count) {
 840                                 count -= info->status.rates[idx].count;
 841                         } else if (count > 0) {
 842                                 info->status.rates[idx].count = count;
 843                                 count = 0;
 844                         } else {
 845                                 info->status.rates[idx].idx = -1;
 846                                 info->status.rates[idx].count = 0;
 847                         }
 848                 }
 849
 850                 if (!(info->flags & IEEE80211_TX_CTL_NO_ACK) &&
 851                      (!payload->status))
 852                         info->flags |= IEEE80211_TX_STAT_ACK;
 853                 if (payload->status & P54_TX_PSM_CANCELLED)
 854                         info->flags |= IEEE80211_TX_STAT_TX_FILTERED;
 855                 info->status.ack_signal = p54_rssi_to_dbm(dev,
 856                                 (int)payload->ack_rssi);
 857
 858                 /* Undo all changes to the frame. */
 859                 switch (entry_data->key_type) {
 860                 case P54_CRYPTO_TKIPMICHAEL: {
 861                         u8 *iv = (u8 *)(entry_data->align + pad +
 862                                         entry_data->crypt_offset);
 863
 864                         /* Restore the original TKIP IV. */
 865                         iv[2] = iv[0];
 866                         iv[0] = iv[1];
 867                         iv[1] = (iv[0] | 0x20) & 0x7f;  /* WEPSeed - 8.3.2.2 */
 868
 869                         frame_len -= 12; /* remove TKIP_MMIC + TKIP_ICV */
 870                         break;
 871                         }
 872                 case P54_CRYPTO_AESCCMP:
 873                         frame_len -= 8; /* remove CCMP_MIC */
 874                         break;
 875                 case P54_CRYPTO_WEP:
 876                         frame_len -= 4; /* remove WEP_ICV */
 877                         break;
 878                 }
 879                 skb_trim(entry, frame_len);
 880                 skb_pull(entry, sizeof(*hdr) + pad + sizeof(*entry_data));
 881                 ieee80211_tx_status_irqsafe(dev, entry);
 882                 goto out;
 883         }
 884         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
 885
 886 out:
 887         if (freed >= priv->headroom + sizeof(struct p54_hdr) + 48 +
 888                      IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
 889                 p54_wake_free_queues(dev);
 890 }
 891
 892 static void p54_rx_eeprom_readback(struct ieee80211_hw *dev,
 893                                    struct sk_buff *skb)
 894 {
 895         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 896         struct p54_eeprom_lm86 *eeprom = (struct p54_eeprom_lm86 *) hdr->data;
 897         struct p54_common *priv = dev->priv;
 898
 899         if (!priv->eeprom)
 900                 return ;
 901
 902         if (priv->fw_var >= 0x509) {
 903                 memcpy(priv->eeprom, eeprom->v2.data,
 904                        le16_to_cpu(eeprom->v2.len));
 905         } else {
 906                 memcpy(priv->eeprom, eeprom->v1.data,
 907                        le16_to_cpu(eeprom->v1.len));
 908         }
 909
 910         complete(&priv->eeprom_comp);
 911 }
 912
 913 static void p54_rx_stats(struct ieee80211_hw *dev, struct sk_buff *skb)
 914 {
 915         struct p54_common *priv = dev->priv;
 916         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 917         struct p54_statistics *stats = (struct p54_statistics *) hdr->data;
 918         u32 tsf32;
 919
 920         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
 921                 return ;
 922
 923         tsf32 = le32_to_cpu(stats->tsf32);
 924         if (tsf32 < priv->tsf_low32)
 925                 priv->tsf_high32++;
 926         priv->tsf_low32 = tsf32;
 927
 928         priv->stats.dot11RTSFailureCount = le32_to_cpu(stats->rts_fail);
 929         priv->stats.dot11RTSSuccessCount = le32_to_cpu(stats->rts_success);
 930         priv->stats.dot11FCSErrorCount = le32_to_cpu(stats->rx_bad_fcs);
 931
 932         priv->noise = p54_rssi_to_dbm(dev, le32_to_cpu(stats->noise));
 933
 934         p54_free_skb(dev, p54_find_tx_entry(dev, hdr->req_id));
 935 }
 936
 937 static void p54_rx_trap(struct ieee80211_hw *dev, struct sk_buff *skb)
 938 {
 939         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 940         struct p54_trap *trap = (struct p54_trap *) hdr->data;
 941         u16 event = le16_to_cpu(trap->event);
 942         u16 freq = le16_to_cpu(trap->frequency);
 943
 944         switch (event) {
 945         case P54_TRAP_BEACON_TX:
 946                 break;
 947         case P54_TRAP_RADAR:
 948                 printk(KERN_INFO "%s: radar (freq:%d MHz)\n",
 949                         wiphy_name(dev->wiphy), freq);
 950                 break;
 951         case P54_TRAP_NO_BEACON:
 952                 break;
 953         case P54_TRAP_SCAN:
 954                 break;
 955         case P54_TRAP_TBTT:
 956                 break;
 957         case P54_TRAP_TIMER:
 958                 break;
 959         default:
 960                 printk(KERN_INFO "%s: received event:%x freq:%d\n",
 961                        wiphy_name(dev->wiphy), event, freq);
 962                 break;
 963         }
 964 }
 965
 966 static int p54_rx_control(struct ieee80211_hw *dev, struct sk_buff *skb)
 967 {
 968         struct p54_hdr *hdr = (struct p54_hdr *) skb->data;
 969
 970         switch (le16_to_cpu(hdr->type)) {
 971         case P54_CONTROL_TYPE_TXDONE:
 972                 p54_rx_frame_sent(dev, skb);
 973                 break;
 974         case P54_CONTROL_TYPE_TRAP:
 975                 p54_rx_trap(dev, skb);
 976                 break;
 977         case P54_CONTROL_TYPE_BBP:
 978                 break;
 979         case P54_CONTROL_TYPE_STAT_READBACK:
 980                 p54_rx_stats(dev, skb);
 981                 break;
 982         case P54_CONTROL_TYPE_EEPROM_READBACK:
 983                 p54_rx_eeprom_readback(dev, skb);
 984                 break;
 985         default:
 986                 printk(KERN_DEBUG "%s: not handling 0x%02x type control frame\n",
 987                        wiphy_name(dev->wiphy), le16_to_cpu(hdr->type));
 988                 break;
 989         }
 990
 991         return 0;
 992 }
 993
 994 /* returns zero if skb can be reused */
 995 int p54_rx(struct ieee80211_hw *dev, struct sk_buff *skb)
 996 {
 997         u16 type = le16_to_cpu(*((__le16 *)skb->data));
 998
 999         if (type & P54_HDR_FLAG_CONTROL)
1000                 return p54_rx_control(dev, skb);
1001         else
1002                 return p54_rx_data(dev, skb);
1003 }
1004 EXPORT_SYMBOL_GPL(p54_rx);
1005
1006 /*
1007  * So, the firmware is somewhat stupid and doesn't know what places in its
1008  * memory incoming data should go to. By poking around in the firmware, we
1009  * can find some unused memory to upload our packets to. However, data that we
1010  * want the card to TX needs to stay intact until the card has told us that
1011  * it is done with it. This function finds empty places we can upload to and
1012  * marks allocated areas as reserved if necessary. p54_rx_frame_sent frees
1013  * allocated areas.
1014  */
1015 static int p54_assign_address(struct ieee80211_hw *dev, struct sk_buff *skb,
1016                                struct p54_hdr *data, u32 len)
1017 {
1018         struct p54_common *priv = dev->priv;
1019         struct sk_buff *entry = priv->tx_queue.next;
1020         struct sk_buff *target_skb = NULL;
1021         struct ieee80211_tx_info *info;
1022         struct memrecord *range;
1023         u32 last_addr = priv->rx_start;
1024         u32 largest_hole = 0;
1025         u32 target_addr = priv->rx_start;
1026         unsigned long flags;
1027         unsigned int left;
1028         len = (len + priv->headroom + priv->tailroom + 3) & ~0x3;
1029
1030         if (!skb)
1031                 return -EINVAL;
1032
1033         spin_lock_irqsave(&priv->tx_queue.lock, flags);
1034
1035         left = skb_queue_len(&priv->tx_queue);
1036         if (unlikely(left >= 28)) {
1037                 /*
1038                  * The tx_queue is nearly full!
1039                  * We have throttle normal data traffic, because we must
1040                  * have a few spare slots for control frames left.
1041                  */
1042                 ieee80211_stop_queues(dev);
1043                 queue_delayed_work(dev->workqueue, &priv->work,
1044                                    msecs_to_jiffies(P54_TX_TIMEOUT));
1045
1046                 if (unlikely(left == 32)) {
1047                         /*
1048                          * The tx_queue is now really full.
1049                          *
1050                          * TODO: check if the device has crashed and reset it.
1051                          */
1052                         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1053                         return -ENOSPC;
1054                 }
1055         }
1056
1057         while (left--) {
1058                 u32 hole_size;
1059                 info = IEEE80211_SKB_CB(entry);
1060                 range = (void *)info->rate_driver_data;
1061                 hole_size = range->start_addr - last_addr;
1062                 if (!target_skb && hole_size >= len) {
1063                         target_skb = entry->prev;
1064                         hole_size -= len;
1065                         target_addr = last_addr;
1066                 }
1067                 largest_hole = max(largest_hole, hole_size);
1068                 last_addr = range->end_addr;
1069                 entry = entry->next;
1070         }
1071         if (!target_skb && priv->rx_end - last_addr >= len) {
1072                 target_skb = priv->tx_queue.prev;
1073                 largest_hole = max(largest_hole, priv->rx_end - last_addr - len);
1074                 if (!skb_queue_empty(&priv->tx_queue)) {
1075                         info = IEEE80211_SKB_CB(target_skb);
1076                         range = (void *)info->rate_driver_data;
1077                         target_addr = range->end_addr;
1078                 }
1079         } else
1080                 largest_hole = max(largest_hole, priv->rx_end - last_addr);
1081
1082         if (!target_skb) {
1083                 spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1084                 ieee80211_stop_queues(dev);
1085                 return -ENOSPC;
1086         }
1087
1088         info = IEEE80211_SKB_CB(skb);
1089         range = (void *)info->rate_driver_data;
1090         range->start_addr = target_addr;
1091         range->end_addr = target_addr + len;
1092         __skb_queue_after(&priv->tx_queue, target_skb, skb);
1093         spin_unlock_irqrestore(&priv->tx_queue.lock, flags);
1094
1095         if (largest_hole < priv->headroom + sizeof(struct p54_hdr) +
1096                            48 + IEEE80211_MAX_RTS_THRESHOLD + priv->tailroom)
1097                 ieee80211_stop_queues(dev);
1098
1099         data->req_id = cpu_to_le32(target_addr + priv->headroom);
1100         return 0;
1101 }
1102
1103 static struct sk_buff *p54_alloc_skb(struct ieee80211_hw *dev,
1104                 u16 hdr_flags, u16 len, u16 type, gfp_t memflags)
1105 {
1106         struct p54_common *priv = dev->priv;
1107         struct p54_hdr *hdr;
1108         struct sk_buff *skb;
1109
1110         skb = __dev_alloc_skb(len + priv->tx_hdr_len, memflags);
1111         if (!skb)
1112                 return NULL;
1113         skb_reserve(skb, priv->tx_hdr_len);
1114
1115         hdr = (struct p54_hdr *) skb_put(skb, sizeof(*hdr));
1116         hdr->flags = cpu_to_le16(hdr_flags);
1117         hdr->len = cpu_to_le16(len - sizeof(*hdr));
1118         hdr->type = cpu_to_le16(type);
1119         hdr->tries = hdr->rts_tries = 0;
1120
1121         if (unlikely(p54_assign_address(dev, skb, hdr, len))) {
1122                 kfree_skb(skb);
1123                 return NULL;
1124         }
1125         return skb;
1126 }
1127
1128 int p54_read_eeprom(struct ieee80211_hw *dev)
1129 {
1130         struct p54_common *priv = dev->priv;
1131         struct p54_hdr *hdr = NULL;
1132         struct p54_eeprom_lm86 *eeprom_hdr;
1133         struct sk_buff *skb;
1134         size_t eeprom_size = 0x2020, offset = 0, blocksize, maxblocksize;
1135         int ret = -ENOMEM;
1136         void *eeprom = NULL;
1137
1138         maxblocksize = EEPROM_READBACK_LEN;
1139         if (priv->fw_var >= 0x509)
1140                 maxblocksize -= 0xc;
1141         else
1142                 maxblocksize -= 0x4;
1143
1144         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(*hdr) +
1145                             sizeof(*eeprom_hdr) + maxblocksize,
1146                             P54_CONTROL_TYPE_EEPROM_READBACK, GFP_KERNEL);
1147         if (!skb)
1148                 goto free;
1149         priv->eeprom = kzalloc(EEPROM_READBACK_LEN, GFP_KERNEL);
1150         if (!priv->eeprom)
1151                 goto free;
1152         eeprom = kzalloc(eeprom_size, GFP_KERNEL);
1153         if (!eeprom)
1154                 goto free;
1155
1156         eeprom_hdr = (struct p54_eeprom_lm86 *) skb_put(skb,
1157                      sizeof(*eeprom_hdr) + maxblocksize);
1158
1159         while (eeprom_size) {
1160                 blocksize = min(eeprom_size, maxblocksize);
1161                 if (priv->fw_var < 0x509) {
1162                         eeprom_hdr->v1.offset = cpu_to_le16(offset);
1163                         eeprom_hdr->v1.len = cpu_to_le16(blocksize);
1164                 } else {
1165                         eeprom_hdr->v2.offset = cpu_to_le32(offset);
1166                         eeprom_hdr->v2.len = cpu_to_le16(blocksize);
1167                         eeprom_hdr->v2.magic2 = 0xf;
1168                         memcpy(eeprom_hdr->v2.magic, (const char *)"LOCK", 4);
1169                 }
1170                 priv->tx(dev, skb);
1171
1172                 if (!wait_for_completion_interruptible_timeout(&priv->eeprom_comp, HZ)) {
1173                         printk(KERN_ERR "%s: device does not respond!\n",
1174                                 wiphy_name(dev->wiphy));
1175                         ret = -EBUSY;
1176                         goto free;
1177                 }
1178
1179                 memcpy(eeprom + offset, priv->eeprom, blocksize);
1180                 offset += blocksize;
1181                 eeprom_size -= blocksize;
1182         }
1183
1184         ret = p54_parse_eeprom(dev, eeprom, offset);
1185 free:
1186         kfree(priv->eeprom);
1187         priv->eeprom = NULL;
1188         p54_free_skb(dev, skb);
1189         kfree(eeprom);
1190
1191         return ret;
1192 }
1193 EXPORT_SYMBOL_GPL(p54_read_eeprom);
1194
1195 static int p54_set_tim(struct ieee80211_hw *dev, struct ieee80211_sta *sta,
1196                 bool set)
1197 {
1198         struct p54_common *priv = dev->priv;
1199         struct sk_buff *skb;
1200         struct p54_tim *tim;
1201
1202         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1203                       sizeof(struct p54_hdr) + sizeof(*tim),
1204                       P54_CONTROL_TYPE_TIM, GFP_ATOMIC);
1205         if (!skb)
1206                 return -ENOMEM;
1207
1208         tim = (struct p54_tim *) skb_put(skb, sizeof(*tim));
1209         tim->count = 1;
1210         tim->entry[0] = cpu_to_le16(set ? (sta->aid | 0x8000) : sta->aid);
1211         priv->tx(dev, skb);
1212         return 0;
1213 }
1214
1215 static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
1216 {
1217         struct p54_common *priv = dev->priv;
1218         struct sk_buff *skb;
1219         struct p54_sta_unlock *sta;
1220
1221         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1222                 sizeof(struct p54_hdr) + sizeof(*sta),
1223                 P54_CONTROL_TYPE_PSM_STA_UNLOCK, GFP_ATOMIC);
1224         if (!skb)
1225                 return -ENOMEM;
1226
1227         sta = (struct p54_sta_unlock *)skb_put(skb, sizeof(*sta));
1228         memcpy(sta->addr, addr, ETH_ALEN);
1229         priv->tx(dev, skb);
1230         return 0;
1231 }
1232
1233 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
1234                               enum sta_notify_cmd notify_cmd,
1235                               struct ieee80211_sta *sta)
1236 {
1237         switch (notify_cmd) {
1238         case STA_NOTIFY_ADD:
1239         case STA_NOTIFY_REMOVE:
1240                 /*
1241                  * Notify the firmware that we don't want or we don't
1242                  * need to buffer frames for this station anymore.
1243                  */
1244
1245                 p54_sta_unlock(dev, sta->addr);
1246                 break;
1247         case STA_NOTIFY_AWAKE:
1248                 /* update the firmware's filter table */
1249                 p54_sta_unlock(dev, sta->addr);
1250                 break;
1251         default:
1252                 break;
1253         }
1254 }
1255
1256 static int p54_tx_cancel(struct ieee80211_hw *dev, struct sk_buff *entry)
1257 {
1258         struct p54_common *priv = dev->priv;
1259         struct sk_buff *skb;
1260         struct p54_hdr *hdr;
1261         struct p54_txcancel *cancel;
1262
1263         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET,
1264                 sizeof(struct p54_hdr) + sizeof(*cancel),
1265                 P54_CONTROL_TYPE_TXCANCEL, GFP_ATOMIC);
1266         if (!skb)
1267                 return -ENOMEM;
1268
1269         hdr = (void *)entry->data;
1270         cancel = (struct p54_txcancel *)skb_put(skb, sizeof(*cancel));
1271         cancel->req_id = hdr->req_id;
1272         priv->tx(dev, skb);
1273         return 0;
1274 }
1275
1276 static int p54_tx_fill(struct ieee80211_hw *dev, struct sk_buff *skb,
1277                 struct ieee80211_tx_info *info, u8 *queue, size_t *extra_len,
1278                 u16 *flags, u16 *aid)
1279 {
1280         struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1281         struct p54_common *priv = dev->priv;
1282         int ret = 1;
1283
1284         switch (priv->mode) {
1285         case NL80211_IFTYPE_MONITOR:
1286                 /*
1287                  * We have to set P54_HDR_FLAG_DATA_OUT_PROMISC for
1288                  * every frame in promiscuous/monitor mode.
1289                  * see STSW45x0C LMAC API - page 12.
1290                  */
1291                 *aid = 0;
1292                 *flags = P54_HDR_FLAG_DATA_OUT_PROMISC;
1293                 *queue += P54_QUEUE_DATA;
1294                 break;
1295         case NL80211_IFTYPE_STATION:
1296                 *aid = 1;
1297                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1298                         *queue = P54_QUEUE_MGMT;
1299                         ret = 0;
1300                 } else
1301                         *queue += P54_QUEUE_DATA;
1302                 break;
1303         case NL80211_IFTYPE_AP:
1304         case NL80211_IFTYPE_ADHOC:
1305         case NL80211_IFTYPE_MESH_POINT:
1306                 if (info->flags & IEEE80211_TX_CTL_SEND_AFTER_DTIM) {
1307                         *aid = 0;
1308                         *queue = P54_QUEUE_CAB;
1309                         return 0;
1310                 }
1311
1312                 if (unlikely(ieee80211_is_mgmt(hdr->frame_control))) {
1313                         if (ieee80211_is_probe_resp(hdr->frame_control)) {
1314                                 *aid = 0;
1315                                 *queue = P54_QUEUE_MGMT;
1316                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP |
1317                                          P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1318                                 return 0;
1319                         } else if (ieee80211_is_beacon(hdr->frame_control)) {
1320                                 *aid = 0;
1321
1322                                 if (info->flags & IEEE80211_TX_CTL_INJECTED) {
1323                                         /*
1324                                          * Injecting beacons on top of a AP is
1325                                          * not a good idea... nevertheless,
1326                                          * it should be doable.
1327                                          */
1328
1329                                         *queue += P54_QUEUE_DATA;
1330                                         return 1;
1331                                 }
1332
1333                                 *flags = P54_HDR_FLAG_DATA_OUT_TIMESTAMP;
1334                                 *queue = P54_QUEUE_BEACON;
1335                                 *extra_len = IEEE80211_MAX_TIM_LEN;
1336                                 return 0;
1337                         } else {
1338                                 *queue = P54_QUEUE_MGMT;
1339                                 ret = 0;
1340                         }
1341                 } else
1342                         *queue += P54_QUEUE_DATA;
1343
1344                 if (info->control.sta)
1345                         *aid = info->control.sta->aid;
1346                 else
1347                         *flags |= P54_HDR_FLAG_DATA_OUT_NOCANCEL;
1348                 break;
1349         }
1350         return ret;
1351 }
1352
1353 static u8 p54_convert_algo(enum ieee80211_key_alg alg)
1354 {
1355         switch (alg) {
1356         case ALG_WEP:
1357                 return P54_CRYPTO_WEP;
1358         case ALG_TKIP:
1359                 return P54_CRYPTO_TKIPMICHAEL;
1360         case ALG_CCMP:
1361                 return P54_CRYPTO_AESCCMP;
1362         default:
1363                 return 0;
1364         }
1365 }
1366
1367 static int p54_tx(struct ieee80211_hw *dev, struct sk_buff *skb)
1368 {
1369         struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1370         struct ieee80211_tx_queue_stats *current_queue;
1371         struct p54_common *priv = dev->priv;
1372         struct p54_hdr *hdr;
1373         struct p54_tx_data *txhdr;
1374         size_t padding, len, tim_len = 0;
1375         int i, j, ridx, ret;
1376         u16 hdr_flags = 0, aid = 0;
1377         u8 rate, queue, crypt_offset = 0;
1378         u8 cts_rate = 0x20;
1379         u8 rc_flags;
1380         u8 calculated_tries[4];
1381         u8 nrates = 0, nremaining = 8;
1382
1383         queue = skb_get_queue_mapping(skb);
1384
1385         ret = p54_tx_fill(dev, skb, info, &queue, &tim_len, &hdr_flags, &aid);
1386         current_queue = &priv->tx_stats[queue];
1387         if (unlikely((current_queue->len > current_queue->limit) && ret))
1388                 return NETDEV_TX_BUSY;
1389         current_queue->len++;
1390         current_queue->count++;
1391         if ((current_queue->len == current_queue->limit) && ret)
1392                 ieee80211_stop_queue(dev, skb_get_queue_mapping(skb));
1393
1394         padding = (unsigned long)(skb->data - (sizeof(*hdr) + sizeof(*txhdr))) & 3;
1395         len = skb->len;
1396
1397         if (info->control.hw_key) {
1398                 crypt_offset = ieee80211_get_hdrlen_from_skb(skb);
1399                 if (info->control.hw_key->alg == ALG_TKIP) {
1400                         u8 *iv = (u8 *)(skb->data + crypt_offset);
1401                         /*
1402                          * The firmware excepts that the IV has to have
1403                          * this special format
1404                          */
1405                         iv[1] = iv[0];
1406                         iv[0] = iv[2];
1407                         iv[2] = 0;
1408                 }
1409         }
1410
1411         txhdr = (struct p54_tx_data *) skb_push(skb, sizeof(*txhdr) + padding);
1412         hdr = (struct p54_hdr *) skb_push(skb, sizeof(*hdr));
1413
1414         if (padding)
1415                 hdr_flags |= P54_HDR_FLAG_DATA_ALIGN;
1416         hdr->type = cpu_to_le16(aid);
1417         hdr->rts_tries = info->control.rates[0].count;
1418
1419         /*
1420          * we register the rates in perfect order, and
1421          * RTS/CTS won't happen on 5 GHz
1422          */
1423         cts_rate = info->control.rts_cts_rate_idx;
1424
1425         memset(&txhdr->rateset, 0, sizeof(txhdr->rateset));
1426
1427         /* see how many rates got used */
1428         for (i = 0; i < 4; i++) {
1429                 if (info->control.rates[i].idx < 0)
1430                         break;
1431                 nrates++;
1432         }
1433
1434         /* limit tries to 8/nrates per rate */
1435         for (i = 0; i < nrates; i++) {
1436                 /*
1437                  * The magic expression here is equivalent to 8/nrates for
1438                  * all values that matter, but avoids division and jumps.
1439                  * Note that nrates can only take the values 1 through 4.
1440                  */
1441                 calculated_tries[i] = min_t(int, ((15 >> nrates) | 1) + 1,
1442                                                  info->control.rates[i].count);
1443                 nremaining -= calculated_tries[i];
1444         }
1445
1446         /* if there are tries left, distribute from back to front */
1447         for (i = nrates - 1; nremaining > 0 && i >= 0; i--) {
1448                 int tmp = info->control.rates[i].count - calculated_tries[i];
1449
1450                 if (tmp <= 0)
1451                         continue;
1452                 /* RC requested more tries at this rate */
1453
1454                 tmp = min_t(int, tmp, nremaining);
1455                 calculated_tries[i] += tmp;
1456                 nremaining -= tmp;
1457         }
1458
1459         ridx = 0;
1460         for (i = 0; i < nrates && ridx < 8; i++) {
1461                 /* we register the rates in perfect order */
1462                 rate = info->control.rates[i].idx;
1463                 if (info->band == IEEE80211_BAND_5GHZ)
1464                         rate += 4;
1465
1466                 /* store the count we actually calculated for TX status */
1467                 info->control.rates[i].count = calculated_tries[i];
1468
1469                 rc_flags = info->control.rates[i].flags;
1470                 if (rc_flags & IEEE80211_TX_RC_USE_SHORT_PREAMBLE) {
1471                         rate |= 0x10;
1472                         cts_rate |= 0x10;
1473                 }
1474                 if (rc_flags & IEEE80211_TX_RC_USE_RTS_CTS)
1475                         rate |= 0x40;
1476                 else if (rc_flags & IEEE80211_TX_RC_USE_CTS_PROTECT)
1477                         rate |= 0x20;
1478                 for (j = 0; j < calculated_tries[i] && ridx < 8; j++) {
1479                         txhdr->rateset[ridx] = rate;
1480                         ridx++;
1481                 }
1482         }
1483
1484         if (info->flags & IEEE80211_TX_CTL_ASSIGN_SEQ)
1485                 hdr_flags |= P54_HDR_FLAG_DATA_OUT_SEQNR;
1486
1487         /* TODO: enable bursting */
1488         hdr->flags = cpu_to_le16(hdr_flags);
1489         hdr->tries = ridx;
1490         txhdr->rts_rate_idx = 0;
1491         if (info->control.hw_key) {
1492                 txhdr->key_type = p54_convert_algo(info->control.hw_key->alg);
1493                 txhdr->key_len = min((u8)16, info->control.hw_key->keylen);
1494                 memcpy(txhdr->key, info->control.hw_key->key, txhdr->key_len);
1495                 if (info->control.hw_key->alg == ALG_TKIP) {
1496                         if (unlikely(skb_tailroom(skb) < 12))
1497                                 goto err;
1498                         /* reserve space for the MIC key */
1499                         len += 8;
1500                         memcpy(skb_put(skb, 8), &(info->control.hw_key->key
1501                                 [NL80211_TKIP_DATA_OFFSET_TX_MIC_KEY]), 8);
1502                 }
1503                 /* reserve some space for ICV */
1504                 len += info->control.hw_key->icv_len;
1505                 memset(skb_put(skb, info->control.hw_key->icv_len), 0,
1506                        info->control.hw_key->icv_len);
1507         } else {
1508                 txhdr->key_type = 0;
1509                 txhdr->key_len = 0;
1510         }
1511         txhdr->crypt_offset = crypt_offset;
1512         txhdr->hw_queue = queue;
1513         txhdr->backlog = current_queue->len;
1514         memset(txhdr->durations, 0, sizeof(txhdr->durations));
1515         txhdr->tx_antenna = (info->antenna_sel_tx == 0) ?
1516                 2 : info->antenna_sel_tx - 1;
1517         txhdr->output_power = priv->output_power;
1518         txhdr->cts_rate = cts_rate;
1519         if (padding)
1520                 txhdr->align[0] = padding;
1521
1522         hdr->len = cpu_to_le16(len);
1523         /* modifies skb->cb and with it info, so must be last! */
1524         if (unlikely(p54_assign_address(dev, skb, hdr, skb->len + tim_len)))
1525                 goto err;
1526         priv->tx(dev, skb);
1527
1528         queue_delayed_work(dev->workqueue, &priv->work,
1529                            msecs_to_jiffies(P54_TX_FRAME_LIFETIME));
1530
1531         return 0;
1532
1533  err:
1534         skb_pull(skb, sizeof(*hdr) + sizeof(*txhdr) + padding);
1535         current_queue->len--;
1536         current_queue->count--;
1537         return NETDEV_TX_BUSY;
1538 }
1539
1540 static int p54_setup_mac(struct ieee80211_hw *dev)
1541 {
1542         struct p54_common *priv = dev->priv;
1543         struct sk_buff *skb;
1544         struct p54_setup_mac *setup;
1545         u16 mode;
1546
1547         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*setup) +
1548                             sizeof(struct p54_hdr), P54_CONTROL_TYPE_SETUP,
1549                             GFP_ATOMIC);
1550         if (!skb)
1551                 return -ENOMEM;
1552
1553         setup = (struct p54_setup_mac *) skb_put(skb, sizeof(*setup));
1554         if (dev->conf.radio_enabled) {
1555                 switch (priv->mode) {
1556                 case NL80211_IFTYPE_STATION:
1557                         mode = P54_FILTER_TYPE_STATION;
1558                         break;
1559                 case NL80211_IFTYPE_AP:
1560                         mode = P54_FILTER_TYPE_AP;
1561                         break;
1562                 case NL80211_IFTYPE_ADHOC:
1563                 case NL80211_IFTYPE_MESH_POINT:
1564                         mode = P54_FILTER_TYPE_IBSS;
1565                         break;
1566                 case NL80211_IFTYPE_MONITOR:
1567                         mode = P54_FILTER_TYPE_PROMISCUOUS;
1568                         break;
1569                 default:
1570                         mode = P54_FILTER_TYPE_NONE;
1571                         break;
1572                 }
1573
1574                 /*
1575                  * "TRANSPARENT and PROMISCUOUS are mutually exclusive"
1576                  * STSW45X0C LMAC API - page 12
1577                  */
1578                 if ((priv->filter_flags & FIF_PROMISC_IN_BSS) &&
1579                     (mode != P54_FILTER_TYPE_PROMISCUOUS))
1580                         mode |= P54_FILTER_TYPE_TRANSPARENT;
1581         } else
1582                 mode = P54_FILTER_TYPE_RX_DISABLED;
1583
1584         setup->mac_mode = cpu_to_le16(mode);
1585         memcpy(setup->mac_addr, priv->mac_addr, ETH_ALEN);
1586         memcpy(setup->bssid, priv->bssid, ETH_ALEN);
1587         setup->rx_antenna = 2; /* automatic */
1588         setup->rx_align = 0;
1589         if (priv->fw_var < 0x500) {
1590                 setup->v1.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1591                 memset(setup->v1.rts_rates, 0, 8);
1592                 setup->v1.rx_addr = cpu_to_le32(priv->rx_end);
1593                 setup->v1.max_rx = cpu_to_le16(priv->rx_mtu);
1594                 setup->v1.rxhw = cpu_to_le16(priv->rxhw);
1595                 setup->v1.wakeup_timer = cpu_to_le16(priv->wakeup_timer);
1596                 setup->v1.unalloc0 = cpu_to_le16(0);
1597         } else {
1598                 setup->v2.rx_addr = cpu_to_le32(priv->rx_end);
1599                 setup->v2.max_rx = cpu_to_le16(priv->rx_mtu);
1600                 setup->v2.rxhw = cpu_to_le16(priv->rxhw);
1601                 setup->v2.timer = cpu_to_le16(priv->wakeup_timer);
1602                 setup->v2.truncate = cpu_to_le16(48896);
1603                 setup->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1604                 setup->v2.sbss_offset = 0;
1605                 setup->v2.mcast_window = 0;
1606                 setup->v2.rx_rssi_threshold = 0;
1607                 setup->v2.rx_ed_threshold = 0;
1608                 setup->v2.ref_clock = cpu_to_le32(644245094);
1609                 setup->v2.lpf_bandwidth = cpu_to_le16(65535);
1610                 setup->v2.osc_start_delay = cpu_to_le16(65535);
1611         }
1612         priv->tx(dev, skb);
1613         return 0;
1614 }
1615
1616 static int p54_scan(struct ieee80211_hw *dev, u16 mode, u16 dwell)
1617 {
1618         struct p54_common *priv = dev->priv;
1619         struct sk_buff *skb;
1620         struct p54_scan *chan;
1621         unsigned int i;
1622         void *entry;
1623         __le16 freq = cpu_to_le16(dev->conf.channel->center_freq);
1624         int band = dev->conf.channel->band;
1625
1626         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*chan) +
1627                             sizeof(struct p54_hdr), P54_CONTROL_TYPE_SCAN,
1628                             GFP_ATOMIC);
1629         if (!skb)
1630                 return -ENOMEM;
1631
1632         chan = (struct p54_scan *) skb_put(skb, sizeof(*chan));
1633         memset(chan->padding1, 0, sizeof(chan->padding1));
1634         chan->mode = cpu_to_le16(mode);
1635         chan->dwell = cpu_to_le16(dwell);
1636
1637         for (i = 0; i < priv->iq_autocal_len; i++) {
1638                 if (priv->iq_autocal[i].freq != freq)
1639                         continue;
1640
1641                 memcpy(&chan->iq_autocal, &priv->iq_autocal[i],
1642                        sizeof(*priv->iq_autocal));
1643                 break;
1644         }
1645         if (i == priv->iq_autocal_len)
1646                 goto err;
1647
1648         for (i = 0; i < priv->output_limit_len; i++) {
1649                 if (priv->output_limit[i].freq != freq)
1650                         continue;
1651
1652                 chan->val_barker = 0x38;
1653                 chan->val_bpsk = chan->dup_bpsk =
1654                         priv->output_limit[i].val_bpsk;
1655                 chan->val_qpsk = chan->dup_qpsk =
1656                         priv->output_limit[i].val_qpsk;
1657                 chan->val_16qam = chan->dup_16qam =
1658                         priv->output_limit[i].val_16qam;
1659                 chan->val_64qam = chan->dup_64qam =
1660                         priv->output_limit[i].val_64qam;
1661                 break;
1662         }
1663         if (i == priv->output_limit_len)
1664                 goto err;
1665
1666         entry = priv->curve_data->data;
1667         for (i = 0; i < priv->curve_data->channels; i++) {
1668                 if (*((__le16 *)entry) != freq) {
1669                         entry += sizeof(__le16);
1670                         entry += sizeof(struct p54_pa_curve_data_sample) *
1671                                  priv->curve_data->points_per_channel;
1672                         continue;
1673                 }
1674
1675                 entry += sizeof(__le16);
1676                 chan->pa_points_per_curve = 8;
1677                 memset(chan->curve_data, 0, sizeof(*chan->curve_data));
1678                 memcpy(chan->curve_data, entry,
1679                        sizeof(struct p54_pa_curve_data_sample) *
1680                        min((u8)8, priv->curve_data->points_per_channel));
1681                 break;
1682         }
1683
1684         if (priv->fw_var < 0x500) {
1685                 chan->v1_rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1686                 chan->v1_rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1687         } else {
1688                 chan->v2.rssi.mul = cpu_to_le16(priv->rssical_db[band].mul);
1689                 chan->v2.rssi.add = cpu_to_le16(priv->rssical_db[band].add);
1690                 chan->v2.basic_rate_mask = cpu_to_le32(priv->basic_rate_mask);
1691                 memset(chan->v2.rts_rates, 0, 8);
1692         }
1693         priv->tx(dev, skb);
1694         return 0;
1695
1696  err:
1697         printk(KERN_ERR "%s: frequency change failed\n", wiphy_name(dev->wiphy));
1698         p54_free_skb(dev, skb);
1699         return -EINVAL;
1700 }
1701
1702 static int p54_set_leds(struct ieee80211_hw *dev, int mode, int link, int act)
1703 {
1704         struct p54_common *priv = dev->priv;
1705         struct sk_buff *skb;
1706         struct p54_led *led;
1707
1708         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*led) +
1709                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_LED,
1710                         GFP_ATOMIC);
1711         if (!skb)
1712                 return -ENOMEM;
1713
1714         led = (struct p54_led *)skb_put(skb, sizeof(*led));
1715         led->mode = cpu_to_le16(mode);
1716         led->led_permanent = cpu_to_le16(link);
1717         led->led_temporary = cpu_to_le16(act);
1718         led->duration = cpu_to_le16(1000);
1719         priv->tx(dev, skb);
1720         return 0;
1721 }
1722
1723 #define P54_SET_QUEUE(queue, ai_fs, cw_min, cw_max, _txop)      \
1724 do {                                                            \
1725         queue.aifs = cpu_to_le16(ai_fs);                        \
1726         queue.cwmin = cpu_to_le16(cw_min);                      \
1727         queue.cwmax = cpu_to_le16(cw_max);                      \
1728         queue.txop = cpu_to_le16(_txop);                        \
1729 } while(0)
1730
1731 static int p54_set_edcf(struct ieee80211_hw *dev)
1732 {
1733         struct p54_common *priv = dev->priv;
1734         struct sk_buff *skb;
1735         struct p54_edcf *edcf;
1736
1737         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*edcf) +
1738                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_DCFINIT,
1739                         GFP_ATOMIC);
1740         if (!skb)
1741                 return -ENOMEM;
1742
1743         edcf = (struct p54_edcf *)skb_put(skb, sizeof(*edcf));
1744         if (priv->use_short_slot) {
1745                 edcf->slottime = 9;
1746                 edcf->sifs = 0x10;
1747                 edcf->eofpad = 0x00;
1748         } else {
1749                 edcf->slottime = 20;
1750                 edcf->sifs = 0x0a;
1751                 edcf->eofpad = 0x06;
1752         }
1753         /* (see prism54/isl_oid.h for further details) */
1754         edcf->frameburst = cpu_to_le16(0);
1755         edcf->round_trip_delay = cpu_to_le16(0);
1756         edcf->flags = 0;
1757         memset(edcf->mapping, 0, sizeof(edcf->mapping));
1758         memcpy(edcf->queue, priv->qos_params, sizeof(edcf->queue));
1759         priv->tx(dev, skb);
1760         return 0;
1761 }
1762
1763 static int p54_beacon_tim(struct sk_buff *skb)
1764 {
1765         /*
1766          * the good excuse for this mess is ... the firmware.
1767          * The dummy TIM MUST be at the end of the beacon frame,
1768          * because it'll be overwritten!
1769          */
1770
1771         struct ieee80211_mgmt *mgmt = (void *)skb->data;
1772         u8 *pos, *end;
1773
1774         if (skb->len <= sizeof(mgmt))
1775                 return -EINVAL;
1776
1777         pos = (u8 *)mgmt->u.beacon.variable;
1778         end = skb->data + skb->len;
1779         while (pos < end) {
1780                 if (pos + 2 + pos[1] > end)
1781                         return -EINVAL;
1782
1783                 if (pos[0] == WLAN_EID_TIM) {
1784                         u8 dtim_len = pos[1];
1785                         u8 dtim_period = pos[3];
1786                         u8 *next = pos + 2 + dtim_len;
1787
1788                         if (dtim_len < 3)
1789                                 return -EINVAL;
1790
1791                         memmove(pos, next, end - next);
1792
1793                         if (dtim_len > 3)
1794                                 skb_trim(skb, skb->len - (dtim_len - 3));
1795
1796                         pos = end - (dtim_len + 2);
1797
1798                         /* add the dummy at the end */
1799                         pos[0] = WLAN_EID_TIM;
1800                         pos[1] = 3;
1801                         pos[2] = 0;
1802                         pos[3] = dtim_period;
1803                         pos[4] = 0;
1804                         return 0;
1805                 }
1806                 pos += 2 + pos[1];
1807         }
1808         return 0;
1809 }
1810
1811 static int p54_beacon_update(struct ieee80211_hw *dev,
1812                         struct ieee80211_vif *vif)
1813 {
1814         struct p54_common *priv = dev->priv;
1815         struct sk_buff *beacon;
1816         int ret;
1817
1818         if (priv->cached_beacon) {
1819                 p54_tx_cancel(dev, priv->cached_beacon);
1820                 /* wait for the last beacon the be freed */
1821                 msleep(10);
1822         }
1823
1824         beacon = ieee80211_beacon_get(dev, vif);
1825         if (!beacon)
1826                 return -ENOMEM;
1827         ret = p54_beacon_tim(beacon);
1828         if (ret)
1829                 return ret;
1830         ret = p54_tx(dev, beacon);
1831         if (ret)
1832                 return ret;
1833         priv->cached_beacon = beacon;
1834         priv->tsf_high32 = 0;
1835         priv->tsf_low32 = 0;
1836
1837         return 0;
1838 }
1839
1840 static int p54_start(struct ieee80211_hw *dev)
1841 {
1842         struct p54_common *priv = dev->priv;
1843         int err;
1844
1845         mutex_lock(&priv->conf_mutex);
1846         err = priv->open(dev);
1847         if (err)
1848                 goto out;
1849         P54_SET_QUEUE(priv->qos_params[0], 0x0002, 0x0003, 0x0007, 47);
1850         P54_SET_QUEUE(priv->qos_params[1], 0x0002, 0x0007, 0x000f, 94);
1851         P54_SET_QUEUE(priv->qos_params[2], 0x0003, 0x000f, 0x03ff, 0);
1852         P54_SET_QUEUE(priv->qos_params[3], 0x0007, 0x000f, 0x03ff, 0);
1853         err = p54_set_edcf(dev);
1854         if (err)
1855                 goto out;
1856
1857         memset(priv->bssid, ~0, ETH_ALEN);
1858         priv->mode = NL80211_IFTYPE_MONITOR;
1859         err = p54_setup_mac(dev);
1860         if (err) {
1861                 priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1862                 goto out;
1863         }
1864
1865         queue_delayed_work(dev->workqueue, &priv->work, 0);
1866
1867 out:
1868         mutex_unlock(&priv->conf_mutex);
1869         return err;
1870 }
1871
1872 static void p54_stop(struct ieee80211_hw *dev)
1873 {
1874         struct p54_common *priv = dev->priv;
1875         struct sk_buff *skb;
1876
1877         mutex_lock(&priv->conf_mutex);
1878         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
1879         cancel_delayed_work_sync(&priv->work);
1880         if (priv->cached_beacon)
1881                 p54_tx_cancel(dev, priv->cached_beacon);
1882
1883         priv->stop(dev);
1884         while ((skb = skb_dequeue(&priv->tx_queue)))
1885                 kfree_skb(skb);
1886         priv->cached_beacon = NULL;
1887         priv->tsf_high32 = priv->tsf_low32 = 0;
1888         mutex_unlock(&priv->conf_mutex);
1889 }
1890
1891 static int p54_add_interface(struct ieee80211_hw *dev,
1892                              struct ieee80211_if_init_conf *conf)
1893 {
1894         struct p54_common *priv = dev->priv;
1895
1896         mutex_lock(&priv->conf_mutex);
1897         if (priv->mode != NL80211_IFTYPE_MONITOR) {
1898                 mutex_unlock(&priv->conf_mutex);
1899                 return -EOPNOTSUPP;
1900         }
1901
1902         switch (conf->type) {
1903         case NL80211_IFTYPE_STATION:
1904         case NL80211_IFTYPE_ADHOC:
1905         case NL80211_IFTYPE_AP:
1906         case NL80211_IFTYPE_MESH_POINT:
1907                 priv->mode = conf->type;
1908                 break;
1909         default:
1910                 mutex_unlock(&priv->conf_mutex);
1911                 return -EOPNOTSUPP;
1912         }
1913
1914         memcpy(priv->mac_addr, conf->mac_addr, ETH_ALEN);
1915         p54_setup_mac(dev);
1916         p54_set_leds(dev, 1, 0, 0);
1917         mutex_unlock(&priv->conf_mutex);
1918         return 0;
1919 }
1920
1921 static void p54_remove_interface(struct ieee80211_hw *dev,
1922                                  struct ieee80211_if_init_conf *conf)
1923 {
1924         struct p54_common *priv = dev->priv;
1925
1926         mutex_lock(&priv->conf_mutex);
1927         if (priv->cached_beacon)
1928                 p54_tx_cancel(dev, priv->cached_beacon);
1929         priv->mode = NL80211_IFTYPE_MONITOR;
1930         memset(priv->mac_addr, 0, ETH_ALEN);
1931         memset(priv->bssid, 0, ETH_ALEN);
1932         p54_setup_mac(dev);
1933         mutex_unlock(&priv->conf_mutex);
1934 }
1935
1936 static int p54_config(struct ieee80211_hw *dev, u32 changed)
1937 {
1938         int ret = 0;
1939         struct p54_common *priv = dev->priv;
1940         struct ieee80211_conf *conf = &dev->conf;
1941
1942         mutex_lock(&priv->conf_mutex);
1943         if (changed & IEEE80211_CONF_CHANGE_POWER)
1944                 priv->output_power = conf->power_level << 2;
1945         if (changed & IEEE80211_CONF_CHANGE_RADIO_ENABLED) {
1946                 ret = p54_setup_mac(dev);
1947                 if (ret)
1948                         goto out;
1949         }
1950         if (changed & IEEE80211_CONF_CHANGE_CHANNEL) {
1951                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
1952                 if (ret)
1953                         goto out;
1954         }
1955
1956 out:
1957         mutex_unlock(&priv->conf_mutex);
1958         return ret;
1959 }
1960
1961 static int p54_config_interface(struct ieee80211_hw *dev,
1962                                 struct ieee80211_vif *vif,
1963                                 struct ieee80211_if_conf *conf)
1964 {
1965         struct p54_common *priv = dev->priv;
1966         int ret = 0;
1967
1968         mutex_lock(&priv->conf_mutex);
1969         if (conf->changed & IEEE80211_IFCC_BSSID) {
1970                 memcpy(priv->bssid, conf->bssid, ETH_ALEN);
1971                 ret = p54_setup_mac(dev);
1972                 if (ret)
1973                         goto out;
1974         }
1975
1976         if (conf->changed & IEEE80211_IFCC_BEACON) {
1977                 ret = p54_scan(dev, P54_SCAN_EXIT, 0);
1978                 if (ret)
1979                         goto out;
1980                 ret = p54_setup_mac(dev);
1981                 if (ret)
1982                         goto out;
1983                 ret = p54_beacon_update(dev, vif);
1984                 if (ret)
1985                         goto out;
1986                 ret = p54_set_edcf(dev);
1987                 if (ret)
1988                         goto out;
1989         }
1990
1991         ret = p54_set_leds(dev, 1, !is_multicast_ether_addr(priv->bssid), 0);
1992
1993 out:
1994         mutex_unlock(&priv->conf_mutex);
1995         return ret;
1996 }
1997
1998 static void p54_configure_filter(struct ieee80211_hw *dev,
1999                                  unsigned int changed_flags,
2000                                  unsigned int *total_flags,
2001                                  int mc_count, struct dev_mc_list *mclist)
2002 {
2003         struct p54_common *priv = dev->priv;
2004
2005         *total_flags &= FIF_PROMISC_IN_BSS |
2006                         (*total_flags & FIF_PROMISC_IN_BSS) ?
2007                                 FIF_FCSFAIL : 0;
2008
2009         priv->filter_flags = *total_flags;
2010
2011         if (changed_flags & FIF_PROMISC_IN_BSS)
2012                 p54_setup_mac(dev);
2013 }
2014
2015 static int p54_conf_tx(struct ieee80211_hw *dev, u16 queue,
2016                        const struct ieee80211_tx_queue_params *params)
2017 {
2018         struct p54_common *priv = dev->priv;
2019         int ret;
2020
2021         mutex_lock(&priv->conf_mutex);
2022         if ((params) && !(queue > 4)) {
2023                 P54_SET_QUEUE(priv->qos_params[queue], params->aifs,
2024                         params->cw_min, params->cw_max, params->txop);
2025                 ret = p54_set_edcf(dev);
2026         } else
2027                 ret = -EINVAL;
2028         mutex_unlock(&priv->conf_mutex);
2029         return ret;
2030 }
2031
2032 static int p54_init_xbow_synth(struct ieee80211_hw *dev)
2033 {
2034         struct p54_common *priv = dev->priv;
2035         struct sk_buff *skb;
2036         struct p54_xbow_synth *xbow;
2037
2038         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*xbow) +
2039                             sizeof(struct p54_hdr),
2040                             P54_CONTROL_TYPE_XBOW_SYNTH_CFG,
2041                             GFP_KERNEL);
2042         if (!skb)
2043                 return -ENOMEM;
2044
2045         xbow = (struct p54_xbow_synth *)skb_put(skb, sizeof(*xbow));
2046         xbow->magic1 = cpu_to_le16(0x1);
2047         xbow->magic2 = cpu_to_le16(0x2);
2048         xbow->freq = cpu_to_le16(5390);
2049         memset(xbow->padding, 0, sizeof(xbow->padding));
2050         priv->tx(dev, skb);
2051         return 0;
2052 }
2053
2054 static void p54_work(struct work_struct *work)
2055 {
2056         struct p54_common *priv = container_of(work, struct p54_common,
2057                                                work.work);
2058         struct ieee80211_hw *dev = priv->hw;
2059         struct sk_buff *skb;
2060
2061         if (unlikely(priv->mode == NL80211_IFTYPE_UNSPECIFIED))
2062                 return ;
2063
2064         /*
2065          * TODO: walk through tx_queue and do the following tasks
2066          *      1. initiate bursts.
2067          *      2. cancel stuck frames / reset the device if necessary.
2068          */
2069
2070         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL, sizeof(struct p54_hdr) +
2071                             sizeof(struct p54_statistics),
2072                             P54_CONTROL_TYPE_STAT_READBACK, GFP_KERNEL);
2073         if (!skb)
2074                 return ;
2075
2076         priv->tx(dev, skb);
2077 }
2078
2079 static int p54_get_stats(struct ieee80211_hw *dev,
2080                          struct ieee80211_low_level_stats *stats)
2081 {
2082         struct p54_common *priv = dev->priv;
2083
2084         memcpy(stats, &priv->stats, sizeof(*stats));
2085         return 0;
2086 }
2087
2088 static int p54_get_tx_stats(struct ieee80211_hw *dev,
2089                             struct ieee80211_tx_queue_stats *stats)
2090 {
2091         struct p54_common *priv = dev->priv;
2092
2093         memcpy(stats, &priv->tx_stats[P54_QUEUE_DATA],
2094                sizeof(stats[0]) * dev->queues);
2095         return 0;
2096 }
2097
2098 static void p54_bss_info_changed(struct ieee80211_hw *dev,
2099                                  struct ieee80211_vif *vif,
2100                                  struct ieee80211_bss_conf *info,
2101                                  u32 changed)
2102 {
2103         struct p54_common *priv = dev->priv;
2104
2105         if (changed & BSS_CHANGED_ERP_SLOT) {
2106                 priv->use_short_slot = info->use_short_slot;
2107                 p54_set_edcf(dev);
2108         }
2109         if (changed & BSS_CHANGED_BASIC_RATES) {
2110                 if (dev->conf.channel->band == IEEE80211_BAND_5GHZ)
2111                         priv->basic_rate_mask = (info->basic_rates << 4);
2112                 else
2113                         priv->basic_rate_mask = info->basic_rates;
2114                 p54_setup_mac(dev);
2115                 if (priv->fw_var >= 0x500)
2116                         p54_scan(dev, P54_SCAN_EXIT, 0);
2117         }
2118         if (changed & BSS_CHANGED_ASSOC) {
2119                 if (info->assoc) {
2120                         priv->aid = info->aid;
2121                         priv->wakeup_timer = info->beacon_int *
2122                                              info->dtim_period * 5;
2123                         p54_setup_mac(dev);
2124                 }
2125         }
2126
2127 }
2128
2129 static int p54_set_key(struct ieee80211_hw *dev, enum set_key_cmd cmd,
2130                        struct ieee80211_vif *vif, struct ieee80211_sta *sta,
2131                        struct ieee80211_key_conf *key)
2132 {
2133         struct p54_common *priv = dev->priv;
2134         struct sk_buff *skb;
2135         struct p54_keycache *rxkey;
2136         u8 algo = 0;
2137
2138         if (modparam_nohwcrypt)
2139                 return -EOPNOTSUPP;
2140
2141         if (cmd == DISABLE_KEY)
2142                 algo = 0;
2143         else {
2144                 switch (key->alg) {
2145                 case ALG_TKIP:
2146                         if (!(priv->privacy_caps & (BR_DESC_PRIV_CAP_MICHAEL |
2147                               BR_DESC_PRIV_CAP_TKIP)))
2148                                 return -EOPNOTSUPP;
2149                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2150                         algo = P54_CRYPTO_TKIPMICHAEL;
2151                         break;
2152                 case ALG_WEP:
2153                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_WEP))
2154                                 return -EOPNOTSUPP;
2155                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2156                         algo = P54_CRYPTO_WEP;
2157                         break;
2158                 case ALG_CCMP:
2159                         if (!(priv->privacy_caps & BR_DESC_PRIV_CAP_AESCCMP))
2160                                 return -EOPNOTSUPP;
2161                         key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2162                         algo = P54_CRYPTO_AESCCMP;
2163                         break;
2164                 default:
2165                         return -EOPNOTSUPP;
2166                 }
2167         }
2168
2169         if (key->keyidx > priv->rx_keycache_size) {
2170                 /*
2171                  * The device supports the choosen algorithm, but the firmware
2172                  * does not provide enough key slots to store all of them.
2173                  * So, incoming frames have to be decoded by the mac80211 stack,
2174                  * but we can still offload encryption for outgoing frames.
2175                  */
2176
2177                 return 0;
2178         }
2179
2180         mutex_lock(&priv->conf_mutex);
2181         skb = p54_alloc_skb(dev, P54_HDR_FLAG_CONTROL_OPSET, sizeof(*rxkey) +
2182                         sizeof(struct p54_hdr), P54_CONTROL_TYPE_RX_KEYCACHE,
2183                         GFP_ATOMIC);
2184         if (!skb) {
2185                 mutex_unlock(&priv->conf_mutex);
2186                 return -ENOMEM;
2187         }
2188
2189         /* TODO: some devices have 4 more free slots for rx keys */
2190         rxkey = (struct p54_keycache *)skb_put(skb, sizeof(*rxkey));
2191         rxkey->entry = key->keyidx;
2192         rxkey->key_id = key->keyidx;
2193         rxkey->key_type = algo;
2194         if (sta)
2195                 memcpy(rxkey->mac, sta->addr, ETH_ALEN);
2196         else
2197                 memset(rxkey->mac, ~0, ETH_ALEN);
2198         if (key->alg != ALG_TKIP) {
2199                 rxkey->key_len = min((u8)16, key->keylen);
2200                 memcpy(rxkey->key, key->key, rxkey->key_len);
2201         } else {
2202                 rxkey->key_len = 24;
2203                 memcpy(rxkey->key, key->key, 16);
2204                 memcpy(&(rxkey->key[16]), &(key->key
2205                         [NL80211_TKIP_DATA_OFFSET_RX_MIC_KEY]), 8);
2206         }
2207
2208         priv->tx(dev, skb);
2209         mutex_unlock(&priv->conf_mutex);
2210         return 0;
2211 }
2212
2213 static const struct ieee80211_ops p54_ops = {
2214         .tx                     = p54_tx,
2215         .start                  = p54_start,
2216         .stop                   = p54_stop,
2217         .add_interface          = p54_add_interface,
2218         .remove_interface       = p54_remove_interface,
2219         .set_tim                = p54_set_tim,
2220         .sta_notify             = p54_sta_notify,
2221         .set_key                = p54_set_key,
2222         .config                 = p54_config,
2223         .config_interface       = p54_config_interface,
2224         .bss_info_changed       = p54_bss_info_changed,
2225         .configure_filter       = p54_configure_filter,
2226         .conf_tx                = p54_conf_tx,
2227         .get_stats              = p54_get_stats,
2228         .get_tx_stats           = p54_get_tx_stats
2229 };
2230
2231 struct ieee80211_hw *p54_init_common(size_t priv_data_len)
2232 {
2233         struct ieee80211_hw *dev;
2234         struct p54_common *priv;
2235
2236         dev = ieee80211_alloc_hw(priv_data_len, &p54_ops);
2237         if (!dev)
2238                 return NULL;
2239
2240         priv = dev->priv;
2241         priv->hw = dev;
2242         priv->mode = NL80211_IFTYPE_UNSPECIFIED;
2243         priv->basic_rate_mask = 0x15f;
2244         skb_queue_head_init(&priv->tx_queue);
2245         dev->flags = IEEE80211_HW_RX_INCLUDES_FCS |
2246                      IEEE80211_HW_SIGNAL_DBM |
2247                      IEEE80211_HW_NOISE_DBM;
2248
2249         dev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
2250                                       BIT(NL80211_IFTYPE_ADHOC) |
2251                                       BIT(NL80211_IFTYPE_AP) |
2252                                       BIT(NL80211_IFTYPE_MESH_POINT);
2253
2254         dev->channel_change_time = 1000;        /* TODO: find actual value */
2255         priv->tx_stats[P54_QUEUE_BEACON].limit = 1;
2256         priv->tx_stats[P54_QUEUE_FWSCAN].limit = 1;
2257         priv->tx_stats[P54_QUEUE_MGMT].limit = 3;
2258         priv->tx_stats[P54_QUEUE_CAB].limit = 3;
2259         priv->tx_stats[P54_QUEUE_DATA].limit = 5;
2260         dev->queues = 1;
2261         priv->noise = -94;
2262         /*
2263          * We support at most 8 tries no matter which rate they're at,
2264          * we cannot support max_rates * max_rate_tries as we set it
2265          * here, but setting it correctly to 4/2 or so would limit us
2266          * artificially if the RC algorithm wants just two rates, so
2267          * let's say 4/7, we'll redistribute it at TX time, see the
2268          * comments there.
2269          */
2270         dev->max_rates = 4;
2271         dev->max_rate_tries = 7;
2272         dev->extra_tx_headroom = sizeof(struct p54_hdr) + 4 +
2273                                  sizeof(struct p54_tx_data);
2274
2275         mutex_init(&priv->conf_mutex);
2276         init_completion(&priv->eeprom_comp);
2277         INIT_DELAYED_WORK(&priv->work, p54_work);
2278
2279         return dev;
2280 }
2281 EXPORT_SYMBOL_GPL(p54_init_common);
2282
2283 void p54_free_common(struct ieee80211_hw *dev)
2284 {
2285         struct p54_common *priv = dev->priv;
2286         kfree(priv->iq_autocal);
2287         kfree(priv->output_limit);
2288         kfree(priv->curve_data);
2289 }
2290 EXPORT_SYMBOL_GPL(p54_free_common);
2291
2292 static int __init p54_init(void)
2293 {
2294         return 0;
2295 }
2296
2297 static void __exit p54_exit(void)
2298 {
2299 }
2300
2301 module_init(p54_init);
2302 module_exit(p54_exit);